Question

reviewing undefinable terms. the intersection of plane r and plane p is line db. point is not on plane p. ce and intersect at point.

Explanation:

Step1: Identify non - plane P points

By observing the figure, point H is outside plane P.

Step2: Find intersection of lines

Lines $\overleftrightarrow{CE}$ and $\overleftrightarrow{DB}$ intersect at point D.

Answer:

Point H is not on plane P. $\overleftrightarrow{CE}$ and $\overleftrightarrow{DB}$ intersect at point D.